Merge pull request #131 from EricpolUkraine/development

Pre-release merge from 'development' to 'test' (v1.10.1-alpha)
Modified width of exported to excel columns in WriteBusinessTripData
Removed static dependency on nunitframework.dll. Added nunit package.
Merge pull request #133 from Bohdan-Tereta/development

Issue #129 improvements, issue #132 fix
Merge pull request #135 from EricpolUkraine/test

Release merge from 'test' to 'development' (v1.10.1)